Electric regulator.



Patented Sept. I, 190|.

M MOSKOWITZ ELECTRIC REGULATOR.

(Applxcntxon led Sept 27 1900) No. 682,2I9.

(No Model.)

UNITED STATES PATENT OFFICE.

MORRIS MOSKOWITZ, OF NEW YORK, N. Y., ASSIGNOR TO JAMES Il. YOUNG, TRUSTEE, OF SAME PLACE.

ELECTRIC REGULATOR.

SPECIFICATION forming part f Letters Patent N0. 682,219, dated September 10, 1901.

Application filed September 27, 1900. Serial No. 31,224. (No model.)

T0 @ZZ whOm if 71ML!! OOTLGWW at varying speeds, and that its circuit has Be it known that I, MORRIS MOSKOWITZ, been closed at z, when that speed (say fifteen electrical engineer, of the city of New York, miles per hour) has been reached then its State of New York, (whose post-office address exciting current passes from the positive 55 isNewKirkavenueandTWenty-second street, brush of the commutator c' to the contact- Brooklyn, New York,) have invented certain arm z' of the rheostat c, thence through the new and useful Improvements in Electric Regfield-coils a", and back to the negative brush ulators, of which the following is a descripof the generator, and the main current now tion accompanied by a drawing. flows from the positve brush of the generator 6o 1o The invention is particularly useful for cirto the rheostat-arm j, and thence into the cuits deriving current from a generator that work-circuit or lamps andback to the negais liable to variations in speed or in any other tive brush of the generator. Charging-curofits conditions, as the object that the invenrent also iiows from the positive brush of the tion accomplishes is the maintaining of any armature a', through the storage battery 71:, 65 one constant condition in such circuit by and back to the negative brush. Now when suitably regulating and controlling the genthe speed of the car exceeds fifteen miles per erator. hour the corresponding increase in the speed The lighting of railway-cars by current deof the generator-armature would raise its rived from a generator that is driven from voltage if the automatic regulator did not in- 7o 2o the car-axle is one instance where the invensert resistance in the generator field-coils a.

tion is especially useful. This occurs in the following manner: The In the accompanying diagrammatic drawsolenoid b is connected to the brushes of the ing the application of the invention to such generator, as shown, and its core makes cona lighting system is shown as arranged for tact with the two spring contact-arms m 75 constant potential, and from this the applicaand n, which connect, respectively, to oppostion of the invention to other systems where ingly-wound lield-coils on the motor f. The either constant potential or constant current other ends of these two field-coils are both are to be derived from a variable source will connected to one brush of the generator a, be readily apparent to electricians. either in series with the motor-armature, 8o 3o The generatordriven under variable speeds as shown, or in shunt. The solenoid-core is is marked a., its armature a, and its eldconnected t-o the other brush of the genermagnet a". At b is a solenoid connected ator, so that current flows through the aracross the brushes of the generator or across mature fi and both opposing field coils of the battery. At c is a rheostat, preferably t-he motor f when the solenoid-core touches 85 having two independent sets of resistanceboth contact-arms m and n and the motorf coils and their respective sliding contactis not actuated. The solenoid core is so arms@` and j, insulated from each other. The placed or adjusted that the standard or norcoil e is a resistance-coil of very heavy wire mal voltage desired at the generator a will capable of carrying the entire working curmaintain it in contact with both arms m and 9o 4o rent. The coil d is of fine Wire intended to n; but when the voltage rises even a little carry only the iield-magnet-exciting current above the normal voltage the core rises and of generator a. At f is a small motor. Its breaks contact at n, thereby at once actuatarmature f rotates in either direction, turning the motorfand causing it to adjust the ing a pinion g, which meshes with a gearrheostat-arm t', and thereby gradually intro- 95 Wheel 71 connected to turn the two rheostatduce resistance into the field-circuit a" of the arms t'. and j. The storage battery (if progenerator until the standard voltage is again vided) is included, as at 7c. The work-cirestablished and the circuit at a closed. If, cuit or lamp-circuit is at t. Now assuming on the other hand, the voltage thereafter that the voltage of the generator is designed falls, the core of the solenoid l) drops, breakroo 5o for a certain minimum speed, the generator ing the contact at m and causing the resistbeing driven (for example) from a car-axle ance to be decreased in the circuit of the field-coils a" until the standard voltage is again established. Thus the voltage is main-V tained at the desired stand ard.

The same solenoid b and .motorf actuate the switch-arm j, which may be utilized to increase the resistance at h in the lampcir cuit when the voltage rises and reduce it when it falls below the standard. Such a series resistance between the generator and the lamps is especially desirable when a storage battery lc is used to discharge current through the lamps when the generator is cut out and to be charged by the generator Wl the generator is running at sufficient speed to eect the charging.

I am of course aware that if the controllingsolenoid should be included in series instead of shunt to the work-circuit or lamp-circuit it would act to maintain the current constant instead of the potential and also that introducing resistance in the field-coils of the generator is not the only well-known Way of controlling the potential.

I contemplate the use of well-known equivalents wherever they may be suggested or desirable to suit special conditions, although at present I prefer to employ a resistence for the held-controller or regulating device for the generator and a small motor as an electrodynamic means of adjusting such controller and a solenoid and contacts m and n as the best electrically-actuated means for making and breaking the circuits of the motor.

As one of the marked advantages of this preferred form of my invention it will be noticed that the circuits of the motor f are never entirely interrupted and that injurious sparking is avoided.

What I claim as the novel features are the following:

The combination with agenerator, and with a work-circuit adapted to be supplied therefrom, of a current-regulating device included in circuit between the generator and the workcircuit, electrodynamic adjusting mechanism for the regulating device one member of which has opposed coils, circuit making and breaking devices for the said opposed coils, and electrically controlled and actuated means in circuit withv the generator for operating the said circuit making and breaking devices, a storage battery and connections for charging it from the generator and discharging it into the work-circuit, and a switch for connecting and disconnecting the generator with the battery and the work-circuit, substantially for the purposes set forth.

Signed this 26th day of September, 1900.

MORRIS MOSKOWITZ.

Witnesses:

HENRY S. MoRToN, HAROLD BINNEY. 

